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Finding the Fourth Proportional to 641,726.40, 961,552.80 and 404,644.80

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Solution

The fourth proportional to 641,726.40, 961,552.80 and 404,644.80 is: 606,313.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,726.40 : 961,552.80 = 404,644.80 : x
  2. Step 2: Convert to fraction form
    641,726.40/961,552.80 = 404,644.80/x
  3. Step 3: Cross multiply
    641,726.40x = 961,552.80 × 404,644.80
  4. Step 4: Simplify right side
    641,726.40x = 389,087,340,445.44
  5. Step 5: Solve for x
    x = 389,087,340,445.44/641,726.40
  6. Step 6: Final answer
    x = 606,313.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.